the requirements: * DMN Standard-, Pro- or Studio-Account * Fast Internet connection (broadband) with at least 128 kBit/s upload and 768 kBit/s download. * Audio sequencer with VST (min. 2.0) or RTAS interface * a simple microphone (for the talkback connection) * A webcam if you want to have visible contact with your recording partner. Audio and MIDI recording is currently only supported by Nuendo/Cubase (Version 2.xx or later), Ableton Live 5 and Pro Tools. Please check our compatibility list to see which sequencers support what functions. ---- So I guess there's a chance that Reaper can't record. Don't understand why , I would have thought that if it supports the VST api that would be all it needs.